From Permeation to Cluster Arrays : Graphene on Ir(111) Exposed to Carbon Vapor

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2017
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Herbig, Charlotte
Knispel, Timo
Schröder, Ulrike A.
Martínez-Galera, Antonio J.
Arman, Mohammad A.
Teichert, Christian
Knudsen, Jan
Krasheninnikov, Arkady V.
Michely, Thomas
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Our scanning tunneling microscopy and X-ray photoelectron spectroscopy experiments along with first-principles calculations uncover the rich phenomenology and enable a coherent understanding of carbon vapor interaction with graphene on Ir(111). At high temperatures, carbon vapor not only permeates to the metal surface but also densifies the graphene cover. Thereby, in addition to underlayer graphene growth, upon cool down also severe wrinkling of the densified graphene cover is observed. In contrast, at low temperatures the adsorbed carbon largely remains on top and self-organizes into a regular array of fullerene-like, thermally highly stable clusters that are covalently bonded to the underlying graphene sheet. Thus, a new type of predominantly sp(2)-hybridized nanostructured and ultrathin carbon material emerges, which may be useful to encage or stably bind metal in finely dispersed form.

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ISO 690HERBIG, Charlotte, Timo KNISPEL, Sabina SIMON, Ulrike A. SCHRÖDER, Antonio J. MARTÍNEZ-GALERA, Mohammad A. ARMAN, Christian TEICHERT, Jan KNUDSEN, Arkady V. KRASHENINNIKOV, Thomas MICHELY, 2017. From Permeation to Cluster Arrays : Graphene on Ir(111) Exposed to Carbon Vapor. In: Nano Letters. 2017, 17(5), pp. 3105-3112. ISSN 1530-6984. eISSN 1530-6992. Available under: doi: 10.1021/acs.nanolett.7b00550
BibTex
@article{Herbig2017Perme-39500,
  year={2017},
  doi={10.1021/acs.nanolett.7b00550},
  title={From Permeation to Cluster Arrays : Graphene on Ir(111) Exposed to Carbon Vapor},
  number={5},
  volume={17},
  issn={1530-6984},
  journal={Nano Letters},
  pages={3105--3112},
  author={Herbig, Charlotte and Knispel, Timo and Simon, Sabina and Schröder, Ulrike A. and Martínez-Galera, Antonio J. and Arman, Mohammad A. and Teichert, Christian and Knudsen, Jan and Krasheninnikov, Arkady V. and Michely, Thomas}
}
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